[Bryan Stewart]

I think for the now the easiest solution is to go back to Premiere 2017 version 11.0.1 under “View Previous Versions” in the CC panel.

Ever since I updated to 11.0.2, all my previous projects that had been stable were slow and lagging, especially with Lumetri color effects applied. It didn’t matter if I was using CUDA or OpenCL as my renderer (OpenCL is more stable for me ever since Apple released 10.10 Yosemite, which is a different conversation), any Lumetri Color effects would have the red render bar above the timeline and would not play back in real time. Usually it’s a breeze with either the yellow or no bar.

I went back to 11.0.1, deleted all my cache and preview files, restarted, imported my entire project into a fresh New project, and all my projects worked great with full performance (once again using OpenCL).

For reference, I use a Late-2012 27in iMac, 3.4Ghz i7, 32 DDR3, standard 1tb hard drive for boot drive with external thunderbolt/usb 3.0 storage, and Geforce GTX 675MX 1024MB.

I submitted some tickets to Adobe Support. Hopefully they’ll smooth this out with the next update.